Hii Mahima!
The preparation tips for the exam is simple still requires Hardwork. You need to know your syllabus very well. Then, you need to make a strict timetable and follow it. Make to do list everyday and complete the task. Solve as many problems as you can on the syllabus. Talking about books, you can refer to the books containing  previous year question papers and solved sample papers. Stay healthy.
Hope this helps.
Good luck!

DU Delhi

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